/*
 *  Copyright (c) 2023. felord.cn
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *       https://www.apache.org/licenses/LICENSE-2.0
 *  Website:
 *       https://felord.cn
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package cn.felord.callback;

class ByteCollector {
    private byte[] byteContainer;

    public byte[] toBytes() {
        return byteContainer;
    }

    public ByteCollector addBytes(byte[] bytes) {
        if (byteContainer == null) {
            this.byteContainer = bytes;
        } else {
            byte[] newByte = new byte[byteContainer.length + bytes.length];
            System.arraycopy(bytes, 0, newByte, byteContainer.length, bytes.length);
            System.arraycopy(byteContainer, 0, newByte, 0, byteContainer.length);
            this.byteContainer = newByte;
        }
        return this;
    }

    public int size() {
        return byteContainer == null ? 0 : byteContainer.length;
    }
}
